package com.zsqat.eshop.order.config;

import org.springframework.amqp.core.Binding;
import org.springframework.amqp.core.Exchange;
import org.springframework.amqp.core.TopicExchange;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import java.util.HashMap;
import org.springframework.amqp.core.Queue;

@Configuration
public class MyRabbitMQConfig {

  /* 容器中的Queue、Exchange、Binding 会自动创建（在RabbitMQ）不存在的情况下 */
  /**
   * 死信队列
   *
   * @return
   */
  @Bean
  public Queue orderDelayQueue() {
        /*
            Queue(String name,  队列名字
            boolean durable,  是否持久化
            boolean exclusive,  是否排他
            boolean autoDelete, 是否自动删除
            Map<String, Object> arguments) 属性
         */
    HashMap<String, Object> arguments = new HashMap<>();
    arguments.put("x-dead-letter-exchange", "order-event-exchange");
    arguments.put("x-dead-letter-routing-key", "order.release.order");
    arguments.put("x-message-ttl", 60000); // 消息过期时间 1分钟
    Queue queue = new Queue("order.delay.queue", true, false, false, arguments);

    return queue;
  }

  /**
   * 普通队列
   *
   * @return
   */
  @Bean
  public Queue orderReleaseQueue() {

    Queue queue = new Queue("order.release.order.queue", true, false, false);

    return queue;
  }

  /**
   * TopicExchange
   *
   * @return
   */
  @Bean
  public Exchange orderEventExchange() {
    /*
     *   String name,
     *   boolean durable,
     *   boolean autoDelete,
     *   Map<String, Object> arguments
     * */
    return new TopicExchange("order-event-exchange", true, false);

  }


  @Bean
  public Binding orderCreateBinding() {
    /*
     * String destination, 目的地（队列名或者交换机名字）
     * DestinationType destinationType, 目的地类型（Queue、Exhcange）
     * String exchange,
     * String routingKey,
     * Map<String, Object> arguments
     * */
    return new Binding("order.delay.queue",
        Binding.DestinationType.QUEUE,
        "order-event-exchange",
        "order.create.order",
        null);
  }

  @Bean
  public Binding orderReleaseBinding() {

    return new Binding("order.release.order.queue",
        Binding.DestinationType.QUEUE,
        "order-event-exchange",
        "order.release.order",
        null);
  }

  /**
   * 订单释放直接和库存释放进行绑定
   * @return
   */
  @Bean
  public Binding orderReleaseOtherBinding() {

    return new Binding("stock.release.stock.queue",
        Binding.DestinationType.QUEUE,
        "order-event-exchange",
        "order.release.other.#",
        null);
  }


  /**
   * 商品秒杀队列
   * @return
   */
  @Bean
  public Queue orderSecKillOrrderQueue() {
    Queue queue = new Queue("order.seckill.order.queue", true, false, false);
    return queue;
  }

  @Bean
  public Binding orderSecKillOrrderQueueBinding() {
    //String destination, DestinationType destinationType, String exchange, String routingKey,
    // 			Map<String, Object> arguments
    Binding binding = new Binding(
        "order.seckill.order.queue",
        Binding.DestinationType.QUEUE,
        "order-event-exchange",
        "order.seckill.order",
        null);

    return binding;
  }
}
